13775197 has 2 divisors, whose sum is σ = 13775198. Its totient is φ = 13775196.

The previous prime is 13775159. The next prime is 13775233. The reversal of 13775197 is 79157731.

13775197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12716356 + 1058841 = 3566^2 + 1029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13775197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13775107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6887598 + 6887599.

It is an arithmetic number, because the mean of its divisors is an integer number (6887599).

Almost surely, 2^13775197 is an apocalyptic number.

It is an amenable number.

13775197 is a deficient number, since it is larger than the sum of its proper divisors (1).

13775197 is an equidigital number, since it uses as much as digits as its factorization.

13775197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46305, while the sum is 40.

The square root of 13775197 is about 3711.4952512431. The cubic root of 13775197 is about 239.7172422292.

The spelling of 13775197 in words is "thirteen million, seven hundred seventy-five thousand, one hundred ninety-seven".